Inequalities for Möbius transformations and discrete groups. G.J. Martin; F.W. Gehring — 1991 Journal für die reine und angewandte Mathematik
Essential singularities of quasimeromorphic mappings. G.J. Martin; D.B. Gauld — 1993 Mathematica Scandinavica
Abelian nondiscrete convergence groups in the plane. Hinkkanen, A.; Martin, G.J. — 1994 Annales Academiae Scientiarum Fennicae. Series A I. Mathematica
On the Margulis constant for Kleinian groups. I. Gehring, F.W.; Martin, G.J. — 1996 Annales Academiae Scientiarum Fennicae. Mathematica
Cylinder and horoball packing in hyperbolic space. Marshall, T.H.; Martin, G.J. — 2005 Annales Academiae Scientiarum Fennicae. Mathematica